Coke

Q. Define destructive distillation of coal. What are the byproducts formed on destructive distillation of coal?

Q.

What are the disadvantages in using wood as a fuel in homes?

Q.

Coke is almost pure form of carbon.

1. True

2. False

Q. Question 27
Name the products obtained and their uses when coal is processed in industry.

Q.

Which product of coal is used as a reducing agent in the extraction of metals ?

Q.

Name three useful products of coal.

Q.

State the one use of black diamonds

Q. Which of the following element is used for making a lead pencil?

1. Silicon
2. Graphite
3. Aluminium
4. Lead

Q.

Give two uses for each of the following :

(a) coal

(b) coke

(c) wood charcoal

(d) sugar charcoal

(e) bone charcoal

(f) lamp black

Q.

State the uses of coke.

Q.

Which of the following burns without producing a flame ?

(a) camphor

(b) coke

(c) cooking gas

(d) kerosene

Q. Describe characteristics and uses of coke

Q. Coke is used in the manufacture of ______.

1. sodium
2. steel
3. mercury
4. pottassium

Q.

The substance used in the preparation of printers ink is _______ (lampblack/coke).

Q. Which among the following is not obtained from the destructive distillation of coal?​

1. Coal gas​
2. Coke
3. Charcoal​
4. Coal tar​

Q.

Which of the following is used as a reducing agent in the extraction of iron metal ?

(a) coal

(b) bitumen

(c) charcoal

(d) coke

Q.

Give two uses of coke.

Q. Define destructive distillation of coal. What are the byproducts formed on destructive distillation of coal?

Q.

Coke is an almost pure form of carbon.

1. True

2. False

Q. List any five important uses of non metals.

Q.

The other name of lamp black is

1. coke

2. charcoal

3. soot

4. gas carbon

Q. __ coke is light substance used in industrial furnaces.

Q. Match the given products of coal with their correct use.

1. Lighting source
2. Manufacture of steel
3. Laying roads

Q.

Soot is:

1. Lamp black

2. Charcoal

3. Coke

4. Graphite

Q. Question 5 (c)
Tick True/False against the following statements :
Coke is the purest form of carbon.

Q. Carbon and iron form an alloy called steel. What is the function of carbon in this alloy?

1. Petrol
2. Coal gas
3. Coke
4. Coal

Q. Which one is a better fuel, coal or coke?

1. Coke is a better fuel because coke produces more heat on burning as compared to coal
2. Coal is a better fuel because it produces more heat on burning as compared to coke
3. None of these
4. Both produce same amount of heat on burning.

Q. Destructive distillation of coal gives a thick black liquid​ with an unpleasant smell, called ________ which is used for _______.

1. coke; metal extraction
2. coal tar; surfacing of roads
3. coal tar; power generation
4. coke; power generation

Q.

Which of the following gas extinguishes the fire in soda-acid fire extinguishers:

1. $CO$

2. $C{O}_2$

3. $H_2$

4. $O_2$

Q. Identify the gas produced during destructive distillation of coal.

1. Coal gas
2. Natural gas
3. Bio gas
4. Petroleum gas